US3637176A - Thermomechanical multifunction support device - Google Patents

Thermomechanical multifunction support device Download PDF

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Publication number
US3637176A
US3637176A US64321A US3637176DA US3637176A US 3637176 A US3637176 A US 3637176A US 64321 A US64321 A US 64321A US 3637176D A US3637176D A US 3637176DA US 3637176 A US3637176 A US 3637176A
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United States
Prior art keywords
piping
screw member
rigid member
movement
pivotally connected
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Expired - Lifetime
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US64321A
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English (en)
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Leonard S Suozzo
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
    • F16L3/20—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction

Definitions

  • ABSTRACT A device for use with piping or other equipment that is subject to changes in position due to variations in its thermal condition.
  • the device comprises actuating; means, which is secured to the piping at spaced first and second locations and is movable relative to the piping in response and in direct proportion to expansion or contraction resulting from said variations in thermal condition, and coupling means.
  • the actuating means includes a rigid member connected at one end to the piping at the first location and a ball screw and nut unit connected to the piping at the second location and connected to the other end of the rigid member.
  • the coupling means is variable in effective length and is connected at one end to the ball screw and nut unit and at its other end to a stationary support.
  • the coupling means includes gearing which is cooperatively associated with the ball screw and nut unit. The parts are so constructed and arranged that increments of movement of the actuating means cause corresponding variations in the effective length of the coupling means.
  • This invention relates in general to a device for properly and effectively supporting and/or controlling movement of piping or other equipment that is subject to changesin position due to variations in its thermal condition.
  • the subject device is multifunctional in that it may beneficially serve in a wide variety of capacities, depending on specific applications, and may be advantageously employed, by way of example, as:
  • the device of this invention is intended for use with piping or other equipment that is subject tochanges in position due to variations in thermal condition.
  • the device comprises two basic means, namely actuating means, adapted to be secured to the piping at spaced first and second locations and to move relative to the piping in response and in direct proportion to said variations in thermal condition, and coupling means connected to the actuating means and adapted to be connected to a stationary support.
  • the actuating means includes a rigid member, which is adapted to be pivotally connected to the piping at said first location, and a motion converting mechanism, such as a ball screw and nut unit, which is connectedl to the rigid member and is adapted to be connected to the piping atsaid second location.
  • the coupling means is adjustable in length and is connectedat one end to the motion converting mechanism and is adapted to be connected at its other end to a stationary support.
  • the coupling means includes gearing which is cooperatively associated with the motion converting mechanism.
  • This invention has for a further object the provision of a device of the character indicated having its parts soconstructed and arranged that increments of movement of the actuating means corresponding, but greatly increased, changes in the effective length of the coupling means.
  • FIG. I is a view in side elevation of a device of this invention cooperatively associated with piping;
  • FIG. 2 is a view corresponding to a portion of FIG. 1 and illustrates a first modified form of the invention
  • FIG. 3 is a view corresponding to FIG. 2 and illustrates another modified form of the invention.
  • FIG. 1 of the drawings the therein illustrated embodiment of the invention is shown in operative association with a section of piping l which is encased in a suitable heat insulating sheath 11.
  • piping section is part of a piping system employed in a high temperature power plant. It is'not uncommon in modern power plants to utilize piping systems to transmit steam at temperatures in excess of l,000 F. and at pressures greater than L500 poundsper square inch. Such systems require adequate support to allow and compensate for movement of the piping due to normal expansion and contraction of the metal thereof.
  • the device of FIG. 1 includes a bracket 12 that is secured at a first location to piping section 10 by a weldment 13.
  • the bracket has a pair of upstanding parallel arms 14, only one of which is shown.
  • a second bracket 15 is secured to the piping section at a second location, spaced from bracket 12, by a like weldment 16.
  • This bracket also has a pair of upstanding parallel arms 17, only one of which is shown.
  • a housing unit 18 includes a rear wall 19 that is attached to bracket arms 17 by bolts 20.
  • the housing unit also includes side and front walls (not shown) and is provided at the top with a tubular, upwardly projecting extension, a portion of which is indicated at 21. t
  • the device also includes actuating means that is comprised of a rigid member 22 and a mechanism 23.
  • Rigid member 22 is connected at one end to bracket arms 14 by a pivot pin 24 and is threaded at its other end, as indicated! at 25.
  • Mechanism 23 is mounted on housing wall 19 and serves the function of converting rectilinear motion of rigid member 22 into rotary motion of parts that will be described further along herein.
  • This mechanism comprises a pair of spaced bearings 26which are mounted on housing wall 19 and a screw member 27 which is journaled for rotation in bearings 26.
  • One end of the screw member is threaded for engagement by a sleeve-type turnbuckle 30.
  • the turnbuckle also engages threaded end portion 25 of the rigid member and serves to adjust the combined length of rigid member 22 and screw member 27, as required at the time of installation.
  • Mechanism 23 also comprises a nut member 31 which is operatively as sociated with screw member 27.
  • Mechanism 23 is a low friction unit and is preferably a ball screw and nut unit for the type manufactured by Beaver Precision Products, Inc. of Troy, Mich.
  • the gearing system includes a bevel gear 34, which meshes with bevel gear 33 and a spur gear 35.
  • Gears 34 and35 are mounted at opposite ends of a shaft 36 which is journaled for rotation in bearings 38.
  • Shaft 36 is equipped with a pair of collars 40 and 41 which prevent axial movement of this shaft and its gears in use.
  • Gear '35 meshes with a pinion 42 that is rotatable with a screw member 43.
  • This screw member is supported for rotation in a bearing 44.
  • the lower end of screw member 43 extends through a wall of a casing 45 which is welded to housing wall 19 as indicated at 46.
  • a block 47 Positioned within the casing is a block 47 that is also welded to the housing wall and serves as a bottom support for the screw member.
  • a thrust bearing is interposed between the lower end of the screw member and block 47.
  • the screw member is equipped at its upper end with a travel stop 49 and is operatively associated with a nut member 50.
  • Screw member43 and nut member 50 constitute elements of a second motion converting mechanism.
  • nut member 50 Secured to the sides of nut member 50, preferably by welding, is a pair of oppositely disposed, upwardly projecting, arcuate members 51.
  • a plate 52 is positioned between and welded to the upper ends of member 51.
  • Members 51 carry a pair of oppositely projecting, lateral pins 53 which register with corresponding vertical slots (not shown) in portion 21 of the tubular extension. These pins serve the dual functions of indicating vertical travel of the piping section and preventing rotational movement of nut member 50 relative to screw member 43 while permitting movement of the nut member along the screw member.
  • Nut member 50, members 51 and plate 52 are in the nature of a cage.”
  • a telescopic cover 54 is mounted on nut member 50 and protectively envelopes the upper portion of screw member 43.
  • the device further includes connector means, generally indicated by numeral 55, which comprises a pair of rods 56 and 57 that are threaded, as shown, and are interconnected by a turnbuckle 58 for adjusting the effective length at the time of installation.
  • Rod 56 is pivotally connected by a pin 58 to a bracket 59 which is anchored to a stationary overhead support, such as a beam 60, by bolts or the like 61. As shown, rod 56 extends through the center of plate 52 and is secured thereto by a weldment 62.
  • the piping Due to the interconnection of screw member 27 and coupling means 55, through the medium of nut member 13, gears 33, 34, 35 and 42, screw member 43, nut member 50, members 51 and plate 52, the piping is lowered a distance corresponding to the movement of rigid member 22 and screw member 27. It will be manifest that the distance the pipe is lowered is a multiple of the movement of the actuating means. Such multiple depends on the design of the particular motion converting mechanisms and the ratios of the several intermeshing gears. The parts are so designed and arranged that such distance is the same as the calculated or actual distance the piping would normally move due to temperature increase from cold condition to hot condition. Thus, the device both supports the piping and causes it to move to its calculated or actual normal position due to variations in the temperature of the piping.
  • the temperature of the piping gradually reduces from 1,070 F. to the ambient temperature of about 70 F. and the piping contracts.
  • Such contraction of the piping causes the device to operate in a reverse manner, thereby causing the piping to assume its calculated or normal position at all times during cooling.
  • FIG. 2 For an understanding of the construction of the modification of the invention shown therein.
  • This modification includes parts (not shown) which are the same as the parts in the right-hand portion and in the upper portion of FIG. 1.
  • the device of FIG. 2 comprises a bracket 65 which is welded to piping 10, as indicated at 66, and which includes a pair of upstanding parallel arms 67. Bracket 65 corresponds to bracket 15 of FIG. I.
  • a housing rear wall 68, corresponding to wall I9 of FIG. 1, is anchored to bracket arms 67 by bolts 69.
  • the actuating means of FIG. 2 includes earlier described rigid member 22 and an extension 70 which has a threaded end portion 71 for connection to turnbuckle 30 and which has a clevis at its free end.
  • the actuating means also includes a bell crank 73 which is pivoted to the bracket arms by a pin 73'.
  • the bell crank is connected at one end to clevis 72 by a pivot pin 74 and its other end to the lower portion of a link 75 by a pivot pin 76.
  • the upper end of the link is connected by a pivot pin 77 to the lower end of a screw member 78.
  • the screw member is cooperatively associated with a nut member 79.
  • a bevel gear 81 is secured to and rotatable with nut member 79 and coacts with a gearing system which is similar to that of FIG. I.
  • the gearing system comprises a shaft 82 that is mounted for rotation in bearings 83 and that is provided with collars 84 and 85 to prevent axial movement.
  • Shaft 82 carries a pair of bevel gears 86 and 87, the latter meshing with a bevel gear 88 that is affixed to and rotatable with screw member 43.
  • FIG. 3 The modification of the invention shown in FIG. 3 includes a number of parts which are the same as or similar to corresponding parts embodied in the constructions illustrated in FIGS. l and 2.
  • the construction of FIG. 3 utilizes a link 90 in place of bell crank 73 of FIG. 2.
  • Link 90 is pivoted at its lower end to bracket arms 67 by a pin 91 and its upper end to a link 92 by a pin 93.
  • Link 92 is, in turn, connected by a pivot pin 94 to an end of a screw member 95.
  • This screw member is an element of a motion converting mechanism 96 which is essentially the same as the earlier described motion converting mechanisms.
  • the motion converting mechanism also includes a nut member 97 which carries a spur gear 98. This gear meshes with a pinion 99.
  • the remaining parts of the device of FIG. 3 are the same as those shown in other views.
  • FIGS. 2 and 3 operate in the same general manner as that shown in FIG. 1 as will be evident from an examination thereof.
  • a device for use with equipment, such as piping, that is subject to changes in position resulting from expansion or contraction due to variations in its thermal condition comprising:
  • actuating means adapted to be secured to the piping at spaced first and second locations and to move relative to the piping as the piping expands or contracts in response and in direct proportion to said variations in thermal condition, said actuating means including:
  • a rigid member adapted to be connected at one end to the piping at said first location and move along a generally rectilinear path in use;
  • coupling means operably connected to the actuating means and adapted to be connected to a stationary support, said coupling means including:
  • a device according to claim I wherein the mechanism comprises:
  • a device wherein the actuating means also includes:
  • a lever adapted to be pivotally connected to the piping at said second location, said lever being pivotally connected to the other end of the rigid member and to the screw member at spaced points.
  • lever comprises:
  • a bell crank which is pivotally connected at one end to the rigid member and at its other end to the screw member.
  • a device according to claim 5 wherein the path of movement of the screw member is generally normal to that of the rigid member.
  • a device wherein the lever is adapted to be pivotally connected at one end to the piping at said second location, is pivotally connected at its other end to the screw member and is pivotally connected intermediate its ends to the rigid member.
  • a device for use with equipment, such as piping, that is subject to changes in position resulting from expansion or contraction due to variations in its thermal condition comprising:
  • actuating means adapted to be secured to the piping at spaced first and second locations and to move relative to the piping as the piping expands or contracts in response and in direct proportion to said variations in thermal condition, said actuating means including:
  • a rigid member adapted to be connected at one end to the piping at said first location and move along a generally rectilinear path in use;
  • coupling means operably connected to the actuating means and adapted to be connected to a stationary support, said coupling means including:
  • a device according to claim 9 wherein the first mechanism comprises:
  • the second mechanism comprises:
  • a device according to claim 10 wherein the first screw member is connected directly to the rigid member and moves along the path of movement thereof in use.
  • a device according to claim 10 wherein the actuating means also includes:
  • a lever adapted to be pivotally connected to the piping at said second location, said lever being pivotally connected to the other end of the rigid member and to the first screw member at spaced points.
  • a device according to claim 12 wherein the lever comprises:
  • a bell crank which is pivotally connected at one end to the rigid member and at its other end to the first screw member.
  • a device according to claim 13 wherein the path of movement of the first screw member is generally normal to that of the rigid member.
  • a device wherein the lever is adapted to be pivotally connected at one end to the piping at said second location, is pivotally connected at its other end to the first screw member and is pivotally connected intermediate its ends to the rigid member.
  • a device according to claim 15 wherein the path of movement of the first screw member is generally parallel to that of the rigid member.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supports For Pipes And Cables (AREA)
  • Transmission Devices (AREA)
US64321A 1970-08-17 1970-08-17 Thermomechanical multifunction support device Expired - Lifetime US3637176A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6432170A 1970-08-17 1970-08-17

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US3637176A true US3637176A (en) 1972-01-25

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US (1) US3637176A (OSRAM)
JP (1) JPS5313810B1 (OSRAM)
CA (1) CA939655A (OSRAM)
DE (1) DE2127899C3 (OSRAM)
FR (1) FR2101386A5 (OSRAM)
GB (1) GB1273966A (OSRAM)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517778A1 (fr) * 1981-12-07 1983-06-10 Westinghouse Electric Corp Amortisseur perfectionne
US4410156A (en) * 1977-10-08 1983-10-18 Mannesmann Aktiengesellschaft Suspension of pipes or tubes undergoing thermal expansion
US8297561B1 (en) * 2011-07-22 2012-10-30 Christian Montplaisir Pipe support
US20120312296A1 (en) * 2011-06-08 2012-12-13 Bobcock Power Services, Inc. Solar boiler tube panel supports

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2630404C3 (de) * 1975-07-07 1981-08-06 Pacific Scientific Co., Anaheim, Calif. Strebe zur Arretierung eines mechanischen Elementes
CN103465240A (zh) * 2013-09-23 2013-12-25 北京北方车辆集团有限公司 一种移动方便、升降快速的承载装置
CN111550605A (zh) * 2020-05-11 2020-08-18 潘磊 一种定位稳定的水利工程用定位桩及定位方法
CN113970015B (zh) * 2021-10-25 2023-08-11 中船动力研究院有限公司 一种可调角度连接块

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905415A (en) * 1956-08-02 1959-09-22 Harold J Sundahl Pipe hanger
US2945656A (en) * 1957-06-12 1960-07-19 Grinnell Corp Constant support hangers
US3112909A (en) * 1961-12-26 1963-12-03 Bergen Pipesupport Corp Support apparatus for piping and the like
US3115753A (en) * 1960-12-08 1963-12-31 Grinnell Corp Method and means for controlling a piping system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905415A (en) * 1956-08-02 1959-09-22 Harold J Sundahl Pipe hanger
US2945656A (en) * 1957-06-12 1960-07-19 Grinnell Corp Constant support hangers
US3115753A (en) * 1960-12-08 1963-12-31 Grinnell Corp Method and means for controlling a piping system
US3112909A (en) * 1961-12-26 1963-12-03 Bergen Pipesupport Corp Support apparatus for piping and the like

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410156A (en) * 1977-10-08 1983-10-18 Mannesmann Aktiengesellschaft Suspension of pipes or tubes undergoing thermal expansion
FR2517778A1 (fr) * 1981-12-07 1983-06-10 Westinghouse Electric Corp Amortisseur perfectionne
US20120312296A1 (en) * 2011-06-08 2012-12-13 Bobcock Power Services, Inc. Solar boiler tube panel supports
US9038624B2 (en) * 2011-06-08 2015-05-26 Babcock Power Services, Inc. Solar boiler tube panel supports
US8297561B1 (en) * 2011-07-22 2012-10-30 Christian Montplaisir Pipe support

Also Published As

Publication number Publication date
GB1273966A (en) 1972-05-10
FR2101386A5 (OSRAM) 1972-03-31
DE2127899C3 (de) 1978-09-21
JPS5313810B1 (OSRAM) 1978-05-12
CA939655A (en) 1974-01-08
DE2127899B2 (de) 1978-01-26
DE2127899A1 (de) 1972-02-24

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